up

src/StellaOps.Scanner.WebService/Infrastructure/ProblemResultFactory.cs

@@ -0,0 +1,53 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace StellaOps.Scanner.WebService.Infrastructure;
+
+internal static class ProblemResultFactory
+{
+    private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web)
+    {
+        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
+    };
+
+    public static IResult Create(
+        HttpContext context,
+        string type,
+        string title,
+        int statusCode,
+        string? detail = null,
+        IDictionary<string, object?>? extensions = null)
+    {
+        ArgumentNullException.ThrowIfNull(context);
+        ArgumentException.ThrowIfNullOrWhiteSpace(type);
+        ArgumentException.ThrowIfNullOrWhiteSpace(title);
+
+        var traceId = Activity.Current?.TraceId.ToString() ?? context.TraceIdentifier;
+
+        var problem = new ProblemDetails
+        {
+            Type = type,
+            Title = title,
+            Detail = detail,
+            Status = statusCode,
+            Instance = context.Request.Path
+        };
+
+        problem.Extensions["traceId"] = traceId;
+        if (extensions is not null)
+        {
+            foreach (var entry in extensions)
+            {
+                problem.Extensions[entry.Key] = entry.Value;
+            }
+        }
+
+        var payload = JsonSerializer.Serialize(problem, JsonOptions);
+        return Results.Content(payload, "application/problem+json", Encoding.UTF8, statusCode);
+    }
+}